CH539496A - Pellicule de polymère microporeux à cellules ouvertes et procédé pour sa préparation - Google Patents

Pellicule de polymère microporeux à cellules ouvertes et procédé pour sa préparation

Info

Publication number
CH539496A
CH539496A CH1677370A CH1677370A CH539496A CH 539496 A CH539496 A CH 539496A CH 1677370 A CH1677370 A CH 1677370A CH 1677370 A CH1677370 A CH 1677370A CH 539496 A CH539496 A CH 539496A
Authority
CH
Switzerland
Prior art keywords
film
stretching
sub
cold
microporous
Prior art date
Application number
CH1677370A
Other languages
English (en)
French (fr)
Inventor
Leonard Druin Melvin
Thomas Loft John
Gerald Plovan Steven
Original Assignee
Celanese Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Celanese Corp filed Critical Celanese Corp
Publication of CH539496A publication Critical patent/CH539496A/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
CH1677370A 1969-11-13 1970-11-12 Pellicule de polymère microporeux à cellules ouvertes et procédé pour sa préparation CH539496A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87651169A 1969-11-13 1969-11-13
US8471270A 1970-10-28 1970-10-28

Publications (1)

Publication Number Publication Date
CH539496A true CH539496A (fr) 1973-07-31

Family

ID=26771333

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1677370A CH539496A (fr) 1969-11-13 1970-11-12 Pellicule de polymère microporeux à cellules ouvertes et procédé pour sa préparation

Country Status (8)

Country Link
BE (1) BE758823A (US06521211-20030218-C00004.png)
CA (1) CA925671A (US06521211-20030218-C00004.png)
CH (1) CH539496A (US06521211-20030218-C00004.png)
DE (1) DE2055193C2 (US06521211-20030218-C00004.png)
ES (1) ES385526A1 (US06521211-20030218-C00004.png)
FR (1) FR2067271B1 (US06521211-20030218-C00004.png)
GB (1) GB1287505A (US06521211-20030218-C00004.png)
IL (1) IL35643A (US06521211-20030218-C00004.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843761A (en) * 1973-05-30 1974-10-22 Celanese Corp Process for preparing a thermoplastic microporous film involving a cold stretching step and multiple hot stretching steps
ZA80465B (en) * 1979-02-13 1981-08-26 Celanese Corp Process for preparing hollow microporous polypropylene fibers
US5677360A (en) * 1991-02-13 1997-10-14 Mitsubishi Rayon Co., Ltd. Hydrophilic polymer alloy, fiber and porous membrane comprising this polymer alloy, and methods for preparing them
WO1992014783A1 (en) * 1991-02-13 1992-09-03 Mitsubishi Rayon Co., Ltd. Hydrophilic polymer alloy, fiber and porous film produced therefrom, and production of the same
CA2451068C (en) 2001-06-19 2009-11-03 Kappler Safety Group Vapor permeable, liquid impermeable composite fabric and fabrication process

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB887346A (en) * 1959-09-09 1962-01-17 Ici Ltd Linear polyester films and processes for their production
US3426754A (en) * 1964-06-12 1969-02-11 Celanese Corp Breathable medical dressing
FR1544807A (fr) * 1967-09-27 1968-11-08 Celanese Corp Pellicule à cellules ouvertes

Also Published As

Publication number Publication date
IL35643A (en) 1973-07-30
DE2055193A1 (de) 1971-05-19
FR2067271A1 (US06521211-20030218-C00004.png) 1971-08-20
GB1287505A (en) 1972-08-31
IL35643A0 (en) 1971-02-25
BE758823A (fr) 1971-05-12
CA925671A (en) 1973-05-08
ES385526A1 (es) 1973-10-01
DE2055193C2 (de) 1985-09-12
FR2067271B1 (US06521211-20030218-C00004.png) 1975-01-10

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Legal Events

Date Code Title Description
PL Patent ceased